We had a 2009 Ralliart in the shop in January that we tuned and used to base our "GST Base Flash" off of. This was 100% stock with just a reflash. No boost pills, MBC, or any aftermarket parts.
You can see the results of that here:
http://forums.evolutionm.net/2009-la...-ecuflash.html
We knew there was more in a stock 2009 Ralliart with just an addition of a boost pill upgrade. The same boost pill upgrade we have used with good success on the 2003-2008 Evo 8/9/10.
We had another different 100% stock 2009 Ralliart come in this weekend to test our boost pill upgrade on.
Here is the data and information:
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First off we did all the testing on our in-house Mustang dyno. This is a low-reading and load bearing dyno that has been setup to accurately simulate street load on the car. For this thread I have exported the data from the dyno and created new charts for the sake of visually showing all the data better.
Also note this is done on California 91 octane gasoline.
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The first thing we did is baselined the car as it came in. Meaning 100% stock down to the factory tune.
It was a bit stronger than the
09 Ralliart we had on the dyno in January.
Baseline of
201whp / 217wtq
Peak boost of
18.5psi, dropping to
11psi at 6,000rpm
Next we loaded our 09 Ralliart "Base Flash" onto the car and did a couple runs with that:
Peak power of
224whp / 231wtq
Peak boost of
19psi, dropping to
13psi at 6,500rpm
As you can see, this 09 Ralliart did not gain as much with our BaseFlash as the previous 09 Ralliart did. Every car is different and will gain more or less depending. All data, AFR, Boost was within the parameters of what we tuned into the BaseFlash.
Next we installed our Boost Pill upgrade and went to tuning the Ralliart to establish our BaseFlash+BP for the Boost Pill upgrade:
Peak power of
236whp / 244wtq
Peak boost of
21psi, dropping to
14.5psi at 7,000rpm
As you can see by the overlays, the peak numbers do not tell the whole story here. Large gains where seen in the area under the curve, espically in the midrange from 4,000 to 6,000 rpm.
I tuned a bunch of different boost profiles in the quest to find the "sweet" spot of the smaller RA turbo with everything else stock. Since the RA has a smaller FMIC and turbo than the Evo 10 it really really did not like more boost up top then I ended up with as it started to get very grumpy. The final boost profile is safe and consistent while still using the stock small FMIC and stock exhaust system with stock cat.
The Rev Limiter was also raised from the factory 6800 rpm setting to 7100 rpm because of the added power sustained up top.